I have been watching anime for a year and a half or so and i'm looking for another to watch. I'm in the middle of highschool of the dead now, but after that, i have no idea what i want to watch. The drawing style that i like the most is like that of Oreimo or clannad. I really like harem and romance anime, but if there is an anime that is just so good that it is a 'must see' then please tell me.

Anime shows that i have watched are:

Code Geass: Lelouch of the Rebellion
Code Geass: Lelouch of the Rebellion R2
Clannad Atfer Story
Ano Hi Mita Hana No Namae wo Bokutachi wa Mada Shiranai
Puella Magi Madoka Magica
The Familiar of Zero
The Familiar of Zero: Futatsuki no Kishi
The Familiar of Zero: Princess no Rondo
Vampire Knight
Vampire Knight Guilty
Toaru Majutsu no Index
Akane Iro Ni Somaru Saka
Bokusatsu Tenshi Dokuro-Chan
Amaenaideyo Katsu!!
Hoshizora e kakaru hashi
Asu no Yoichi!
Kimi ga Aruji de Shitsuji ga Ore de
Kore wa Zombie Desu ka
Nagasarete Airantou
To Love-Ru
Motto To Love-Ru
Nyan Koi!
The World God Only Knows
High School Girls
Asura Cryin’
Infinite Stratos
Princess lover
The World God Only Knows (Season 2)
Mayo Chiki
Angel Beats

Thanks for the help